When having your as well as white gray tanks while dry-camping, it's all right to leave your gray tank open, but don't dump your black tank until it's over half full. Use a commercial-grade tank additive, just not a homemade mix. The same chemical should be used in both tanks. Make use of a no-fuss flush as much as portable diesel generator you can, leaving the black tank valve open, soon after which run it for 8 to 10 minutes. Be sure not to equalize the tanks. If ever the black tank needs emptying, you always want to dump a single first.
It likewise predicted that a lot of sedans will have Klein gas, Brown's gas, hydroxy gas, water fuel, call it what you will, fitted as standard by 2010 2030. Who's is somewhat specious prediction, but could turn out to be fact. Not that it turn up useful info equally well on a variety of car, truck, lorry or boat, be they diesel generator or gasoline motivated.
Look gathering dust one point of view.